Event.observe(window, 'load', function(){
    var txts = document.getElementsByClassName('info');
    for (var i=0,j=txts.length; i<j; i++){
        var detail_link = txts[i].getElementsByClassName('todetail')[0];
        var close_link  = txts[i].getElementsByClassName('toclose')[0];
        var detail_txt  = txts[i].getElementsByClassName('detail')[0];
        Event.observe(detail_link, 'click', (function(detail_txt, close_link, detail_link){
            return function(){
                Element.show(detail_txt);
                Element.show(close_link);
                Element.hide(detail_link);
            };
        })(detail_txt, close_link, detail_link));
        Event.observe(close_link, 'click', (function(detail_txt, close_link, detail_link){
            return function(){
                Element.hide(detail_txt);
                Element.hide(close_link);
                Element.show(detail_link);
            };
        })(detail_txt, close_link, detail_link));
    }
});